It's funny and sad how incorrect some of the reviews of this game can be. The reviewers aren't completely to blame as the game doesn't explain many mechanics, but they tend to do minimal searching for answers and never ask questions on same forums they post. I'd like to address the most recent one by
mrttao.
This game does not use a custom game engine, it uses the Godot Engine, a free open source game engine. The gameplay is definitely not balanced nor transparent, but if someone is looking for a power fantasy sandbox about owning slaves then the gameplay is decent. Cash from sex work is complicated compared to other jobs and inexperienced slaves often won't earn much; the Wiki shares their exact mechanics. Ropes are expensive but do not have a 50% chance to wear out, they gain 10%(5% during sex) chance of wearing out after each use, and can't wear out on the first use;
Detailed breakdown.
Combat magic is often functional rather than damaging and damage spells are weak when you have less than 3 magic affinity, but beyond that it's completely overpowered to the point where it one-shots most enemies and can finish off the post-story boss in 2 or 3 rounds. Agility is an overpowered stat, but you only need 2 to 4 points before other stats become useful.
Slave guild quests can be easy cash, but don't tend pay that well per day as the quests only refresh every 5 days and many players struggle to figure out how to efficiently prepare slaves.
Upgrade Points for the mansion can be gained several ways; the least effective way being the repeatable quests from the slave guilds. The most effective way is to capture random mid-level slaves (preferably with higher grade), take them back to the mansion, select them and open the Learning Points, spend any Free Attribute Points to get Upgrade Points, break their rebellious state however you wish(jail, rape, spells), raise their obedience to 80+, and sell them to any slave guild for more Upgrade Points. If you don't want to deal with rebelliousness and obedience, you can sell them for Upgrade Points in one of the black markets for a reputation decrease in a random town. The mechanic forces to you capture and sell slaves to progress, customizing them is optional, and it does pretty well at that.
Quests often have multiple paths to acquiring slaves, but usually only one "be nice to them" path for them to gain the Grateful trait. Strange that they would be grateful to those that were nice to them. The wiki usually only covers the "nice" path, when the users aren't getting the facts wrong. Getting all the CGs requires the player to be less nice to them. You are not required to use the aphrodisiac on Emily(besides the CG and a little loyalty it doesn't gain you much), as any of the 3 choices is viable for completing the full quest line and she will be Grateful. But surprise, people tend not to like you when you force sex upon them.
Chloe, the gnome girl, is never rescued from a rape monster, she clumsily fell down a hole and ate berries with an aphrodisiac effect. You can either fuck or masturbate her, the results are the same, only the text is different. Later you can give her an aphrodisiac instead of an antidote to the berries, but this is not the optimal nor the nice path. Simply curing her is the nice and optimal choice.
Indeed the best way to get mana is sex and some people find the sex to be tedious. It's a mini-game that rewards better results with more mana, but it's not obvious in game how to succeed. Two consenting partners with lots of continuous actions is optimal. Almost every race(Humans and Elves being the exceptions) in the game can provide Essence from sex. The chance of gaining an Essence is not 50%, it's 20% per magic affinity for each person. Having sex with demons does not affect your laboratory cost, they are simply 30% cheaper to operate on.
The economy is indeed quite bad, it's far too easy to get cash, yet many players have trouble getting enough. The jobs list which attributes are necessary for good results, but don't tell you how much the pay will be.
The research subject job pays by level and grade, which with it's severe detrimental outcomes is high risk for moderate pay.
The mage order assistant pays quite well for slaves with high magic affinity, otherwise is moderate at best.
A little preparation makes whoring slaves one of the fastest ways to get large amounts of cash, though there is a bit of stress.
Hunting for slaves is by far the most profitable, but requires the most cash to get setup and can take a couple days to "train" them for optimal reward. If you rush it, then it can be the least profitable and most dangerous.
As I said above, Guild quests can be easy cash if you get lucky but overall rather lacking.
There are many characters with images, but there are only 11 girls you can keep with images, not 20. Art is expensive if you are not an artist, so if you need lots of images it's optimal to rely on the community to provide its own art. The art packs are of varying quality and composition, but the most important thing is to use the Improved Random Portraits mod, otherwise the images will almost never match the slave.
Overall, I'd give this review 3/5 stars, it seems like the reviewer rushed through the game just to give a lengthy review. While they got through most of the quests, it seems that they relied heavily on limited portions of an outdated Wiki for their gameplay guide. Thus they did not have a decent understanding of the game mechanics and judged it by their preconceptions of how it should work. It seems that this game's niche appeals did not work for them, which you can't blame them for, but this likely lead them to rush through it just for the art. The spouting of random "facts" about the game without doing a bit research irks me, but many of these are not stated in game so it's understandable how someone who was not paying attention to the mechanics would get them wrong. Also, while not expected of a simple review, I'd like to point out that this game has a modding system with mods posted on the official forums, where modders have changed all sorts of things including the economy balance and sex mechanics.